| 年度 | 实际值 |
|---|---|
| 1992 | 175 |
| 1993 | 200 |
| 1994 | 266 |
| 1995 | 352 |
| 1996 | 381 |
| 1997 | 554 |
| 1998 | 511 |
| 1999 | 606 |
| 2000 | |
| 2001 | |
| 2002 | |
| 2003 | 834 |
| 2004 | 949 |
| 2005 | 994 |
| 2006 | 1255 |
| 2007 | 11197 |
| 2008 | 12487 |
| 2009 | |
| 2010 | 15175 |
| 2011 | 20048 |
| 2012 | 20581 |
| 2013 | 30069 |
| 2014 | 31233 |
| 2015 | 35925 |
| 2016 | 38380 |
| 2017 | 41249 |
| 2018 | 49846 |